From patchwork Fri Feb 22 15:06:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tianyu Lan X-Patchwork-Id: 1046953 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=kvm-ppc-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="CFBImuIf"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 445ZSm6Lg2z9sCH for ; Sat, 23 Feb 2019 02:07:20 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727196AbfBVPHU (ORCPT ); Fri, 22 Feb 2019 10:07:20 -0500 Received: from mail-pl1-f194.google.com ([209.85.214.194]:41653 "EHLO mail-pl1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726917AbfBVPHT (ORCPT ); Fri, 22 Feb 2019 10:07:19 -0500 Received: by mail-pl1-f194.google.com with SMTP id y5so1218437plk.8; Fri, 22 Feb 2019 07:07:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Mf/z10rMsVUftoqc8y3M+np7GkZ7fKmVzfglvuSuVXs=; b=CFBImuIfxVblpp2dVFSl9Lp9rPMyBKJbp6SYubcKgkfBvz6HEnk2yuVurnpcFMX2jU cTnhiQi/FOhPDBwkoIQDJLl0zyH3eS9nXM4J9QsHwFxLU0MIYCx/f0WjO0sKTtmcgRV8 AxLNTbxwQz+kF7evW9hWhTBmzTA/d0zBmJcztZRYNpgfeo0j99UBLFidJY2Va7EAP1M1 CmD+rEsUr+8L9SZnkQLZ18nAAAlVLhEpxaYU64OrDAXS0e/CFewKx4NO/okJzcUpM0Cb jQknNeAoXBSSXwIAomw0sE6m+7zn4B+9Ndv/Mmzu5dSlNwXJHDC/5kjPbjjc1tazRh38 fSZw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Mf/z10rMsVUftoqc8y3M+np7GkZ7fKmVzfglvuSuVXs=; b=EYDNZPo5MMMx192+Prh6PFN+fix+rZg1cYzbhZmZJqh9aqImnL0tl4KPYARlw9Bxie rTa0ca3g6Tp+EojTneTdt9r0Vy3RdwlR0lS8ZVkFd1T+QAN8lUCeuAkv1bawV4FjmPRh 31D2vt/Bu/Izd6Pj+u2/hyeJj/hTeG7DkMI2kOZqK4rupw/a5EfROpgV3UIj71qle6zh KVEOnG50nB1FWLC8yvYoou9HpXtmxcMArxr1OVaPQZGz/puWnjRo+5KDy7A0BMneVCYI 5BCQh8nzss8hDWSOezhXsF/D7F+GtMiElPJW9uK2S4c9UFsXwQsUZuuPFes8/68nvlhE 6axA== X-Gm-Message-State: AHQUAubJ+qpJumJ0OiVLxnz9iVeVsj4oJNkqKv/VaBAqpTY9DNcTDs8D VIgfYXQqZElENC52SfKa7To= X-Google-Smtp-Source: AHgI3IZvijtWlx7ZoYkznF2XUyI7kKJ/XBTUftVSqGMWnP6U+sXA5icoLNJDjyf30+XMJJVp91f3sw== X-Received: by 2002:a17:902:2be8:: with SMTP id l95mr4682383plb.270.1550848039252; Fri, 22 Feb 2019 07:07:19 -0800 (PST) Received: from localhost.corp.microsoft.com ([167.220.255.67]) by smtp.googlemail.com with ESMTPSA id a4sm6151780pga.52.2019.02.22.07.07.11 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 22 Feb 2019 07:07:18 -0800 (PST) From: lantianyu1986@gmail.com X-Google-Original-From: Tianyu.Lan@microsoft.com Cc: Lan Tianyu , christoffer.dall@arm.com, marc.zyngier@arm.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will.deacon@arm.com, jhogan@kernel.org, ralf@linux-mips.org, paul.burton@mips.com, paulus@ozlabs.org, benh@kernel.crashing.org, mpe@ellerman.id.au, pbonzini@redhat.com, rkrcmar@redhat.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, michael.h.kelley@microsoft.com, kys@microsoft.com, vkuznets@redhat.com Subject: [PATCH V3 3/10] KVM/MMU: Introduce tlb flush with range list Date: Fri, 22 Feb 2019 23:06:30 +0800 Message-Id: <20190222150637.2337-4-Tianyu.Lan@microsoft.com> X-Mailer: git-send-email 2.14.4 In-Reply-To: <20190222150637.2337-1-Tianyu.Lan@microsoft.com> References: <20190222150637.2337-1-Tianyu.Lan@microsoft.com> To: unlisted-recipients:; (no To-header on input) Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org From: Lan Tianyu This patch is to introduce tlb flush with range list interface and use struct kvm_mmu_page as list entry. Use flush list function in the kvm_mmu_commit_zap_page(). Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 8d43b7c0f56f..7a862c56b954 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -291,6 +291,20 @@ static void kvm_flush_remote_tlbs_with_address(struct kvm *kvm, range.start_gfn = start_gfn; range.pages = pages; + range.flush_list = NULL; + + kvm_flush_remote_tlbs_with_range(kvm, &range); +} + +static void kvm_flush_remote_tlbs_with_list(struct kvm *kvm, + struct hlist_head *flush_list) +{ + struct kvm_tlb_range range; + + if (hlist_empty(flush_list)) + return; + + range.flush_list = flush_list; kvm_flush_remote_tlbs_with_range(kvm, &range); } @@ -2719,6 +2733,7 @@ static void kvm_mmu_commit_zap_page(struct kvm *kvm, struct list_head *invalid_list) { struct kvm_mmu_page *sp, *nsp; + HLIST_HEAD(flush_list); if (list_empty(invalid_list)) return; @@ -2732,7 +2747,14 @@ static void kvm_mmu_commit_zap_page(struct kvm *kvm, * In addition, kvm_flush_remote_tlbs waits for all vcpus to exit * guest mode and/or lockless shadow page table walks. */ - kvm_flush_remote_tlbs(kvm); + if (kvm_available_flush_tlb_with_range()) { + list_for_each_entry(sp, invalid_list, link) + hlist_add_head(&sp->flush_link, &flush_list); + + kvm_flush_remote_tlbs_with_list(kvm, &flush_list); + } else { + kvm_flush_remote_tlbs(kvm); + } list_for_each_entry_safe(sp, nsp, invalid_list, link) { WARN_ON(!sp->role.invalid || sp->root_count);